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drm/i915/skl: Double RC6 WRL always on

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WaRsDoubleRc6WrlWithCoarsePowerGating should
be enabled for all Skylakes. Make it so.

Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449505785-20812-2-git-send-email-mika.kuoppala@intel.com
(cherry picked from commit e7674b8c31)
Cc: stable@vger.kernel.org # v4.3+
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Mika Kuoppala 2015-12-07 18:29:45 +02:00 • committed by Jani Nikula
parent 344df9809f
commit 6704d45528
1 changed files with 1 additions and 2 deletions
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3
drivers/gpu/drm/i915/intel_pm.c
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@ -4782,8 +4782,7 @@ static void gen9_enable_rc6(struct drm_device *dev)
/* 2b: Program RC6 thresholds.*/
/* WaRsDoubleRc6WrlWithCoarsePowerGating: Doubling WRL only when CPG is enabled */
if (IS_SKYLAKE(dev) && !((IS_SKL_GT3(dev) || IS_SKL_GT4(dev)) &&
(INTEL_REVID(dev) <= SKL_REVID_E0)))
if (IS_SKYLAKE(dev))
I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 108 << 16);
else
I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16);